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CVE-2026-78571 IBM CVE debrief

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code due to an unguarded eval() call on attacker-controlled input. This vulnerability could lead to potential arbitrary code execution by authenticated attackers, emphasizing the need for verification of inventory and exposure, and priority for implementing compensating controls. Defenders responsible for IBM Langflow OSS deployments should assess exposure and prioritize verification of inventory and compensating controls.

Vendor
IBM
Product
Langflow OSS
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-10
Original CVE updated
2026-09-11
Advisory published
2026-09-10
Advisory updated
2026-09-11

Who should care

Defenders responsible for IBM Langflow OSS deployments should assess exposure and prioritize verification of inventory and compensating controls.

Why it matters

Defenders should prioritize verifying the presence of this vulnerability in their inventory and assessing exposure, as the CVE details an unguarded eval() call that could lead to arbitrary code execution.

  • Potential arbitrary code execution by authenticated attackers
  • Need for verification of inventory and exposure
  • Priority for implementing compensating controls
  • Potential impact on systems using IBM Langflow OSS

Technical summary

The CVE details an unguarded eval() call on attacker-controlled input in IBM Langflow OSS 1.0.0 through 1.11.5, which could allow a remote authenticated attacker to execute arbitrary code. This issue highlights the importance of verifying the presence of this vulnerability in inventory and assessing exposure, as it could lead to potential arbitrary code execution by authenticated attackers. Implementing compensating controls to limit attacker-controlled input and monitoring for potential exploitation attempts are crucial.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their inventory and assessing exposure, as the CVE details an unguarded eval() call that could lead to arbitrary code execution.

Recommended defensive actions

  • Verify the presence of IBM Langflow OSS in your inventory
  • Assess exposure to unguarded eval() calls
  • Implement compensating controls to limit attacker-controlled input
  • Monitor for potential exploitation attempts

Evidence notes

The CVE and NVD records provide details on the vulnerability, including its CVSS score and vector. IBM has also provided a reference page for this issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-78571 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-78571

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-78571 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-78571

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.